I have a good friend who has CP and is in a wheelchair--one of her problems is that when the sidewalks do have curbcuts (and not all do), sometimes the cuts are so steep that her chair tips when she rolls down them. A chair like this would mean she wouldn't have to worry about that problem, and she'd be able to get up and down some curbs, too.

From MST3K's spoof of "Hercules Unchained"--heard as Roman medic soldiers carry off an unconscious Greek Hercules on a 1950's Army green canvas stretcher: "Hi, we're IX-I-I. Did somebody dial IX-I-I?"